Bulgarian Journal of Physics最新文献_第2页

Na-ion Transportation, Dielectric Relaxation and Electric Modulus Behavior of (PEO/PVDF) Based Nanocomposite Polymer Electrolyte (PEO/PVDF)基纳米复合聚合物电解质的na离子输运、介电弛豫和电模量行为

Bulgarian Journal of Physics Pub Date : 2023-08-05 DOI: 10.55318/bgjp.2023.50.3.207

Kiran Kumar Ganta, Vijaya Kumar Katrapally, Ramana Jeedi

{"title":"Na-ion Transportation, Dielectric Relaxation and Electric Modulus Behavior of (PEO/PVDF) Based Nanocomposite Polymer Electrolyte","authors":"Kiran Kumar Ganta, Vijaya Kumar Katrapally, Ramana Jeedi","doi":"10.55318/bgjp.2023.50.3.207","DOIUrl":"https://doi.org/10.55318/bgjp.2023.50.3.207","url":null,"abstract":". Nanocomposite Polymer Electrolyte (NCPE) ﬁlms were prepared with a blend of two polymers: poly ethylene oxide (80wt% PEO) and poly vinylidene ﬂuoride (20wt% PVDF) complexed with a salt, sodium perchlo-rate (7.5wt% NaClO 4 ) and a nano-ﬁller, iron oxide ( x wt% Fe 2 O 3 ) (i.e., (0.8PEO/0.2PVDF) + 7.5wt% NaClO 4 + x wt% Fe 2 O 3 . The complexation and surface morphology of prepared NCPE ﬁlms have been investigated using XRD and SEM techniques, respectively. Electrochemical Impedance Spectroscopy (EIS) studies were done in the frequency range from 10 Hz to 4 MHz to understand the Na-ion transportation, dielectric relaxation and electric modulus of the prepared NCPE ﬁlms. The impact of Fe 2 O 3 nano-ﬁller concentration (Fe 2 O 3 wt%) on the Na-ion transportation, dielectric relaxation and ionic conductivity has been studied. The AC conductivity of all the prepared NCPE ﬁlms at high frequency followed the Jonscher’s power law. The DC ionic conductivity values calculated from the bulk resistance ( R b ) of the NCPE ﬁlms were consistent with the values calculated using Jonscher’s power law. The temperature-dependent ionic conductivity followed the Arrhenius rule between 303 and 333 K. The highest ionic conductivity of 1 . 13 × 10 − 4 S/cm was achieved at ambient temperature for the NCPE-16 ﬁlm (0.8PEO/0.2PVDF) + 7.5wt% NaClO 4 + 16wt% Fe 2 O 3 , and it is due to lowest crystallinity of NCPE-16 ﬁlm. The ionic and electronic transport numbers of all the NCPE ﬁlms were calculated using Wagner’s polarization technique.","PeriodicalId":217381,"journal":{"name":"Bulgarian Journal of Physics","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131323554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of Antihydrogen Ion in Positronium-Antihydrogen Collision with Screened Coulomb Potential 屏蔽库仑势正电子-反氢碰撞中反氢离子的形成

Bulgarian Journal of Physics Pub Date : 2023-08-05 DOI: 10.55318/bgjp.2023.50.3.241

引用次数: 0

Phenomenological Description of Features of Even-Even 230-238U isotopes in Framework of Modified Sood Model 修正good模型框架下230-238U偶-偶同位素特征的现象学描述

Bulgarian Journal of Physics Pub Date : 2023-08-05 DOI: 10.55318/bgjp.2023.50.3.232

K. A. Gado

引用次数: 0

A Characterization of Nontrivial Zeros of Riemann Zeta Function 黎曼ζ函数非平凡零点的刻画

Bulgarian Journal of Physics Pub Date : 2023-08-05 DOI: 10.55318/bgjp.2023.50.3.301

引用次数: 0

Optical Absorption and Emission Spectral Properties of ZnO-Bi2O3-B2O3:TiO2 Glasses ZnO-Bi2O3-B2O3:TiO2玻璃的光吸收和发射光谱性质

Bulgarian Journal of Physics Pub Date : 2023-08-05 DOI: 10.55318/bgjp.2023.50.3.225

Bejjipurapu Chandrasekhar, G. Nagarjuna, Sopinti Ramesh, Darsi Rajeswara Rao, B. V. Raghavaiah

引用次数: 0

Reconstruction of f(R) Gravity from a Polytropic Gas Scalar Field Dark Energy Model 从多向性气体标量场暗能量模型重建f(R)引力

Bulgarian Journal of Physics Pub Date : 2023-06-05 DOI: 10.55318/bgjp.2023.50.2.206

C. Mahanta, Krishna Pandit

引用次数: 0

Thermodynamic, Vibrational Spectroscopic and Antimicrobial Study of a Peptide with an Electrolyte in Non-Aqueous Medium 非水介质中含电解质肽的热力学、振动光谱及抗菌研究

Bulgarian Journal of Physics Pub Date : 2023-06-05 DOI: 10.55318/bgjp.2023.50.2.159

R. Geetha, R. Padmavathy, T. Malini, N. Radha

{"title":"Thermodynamic, Vibrational Spectroscopic and Antimicrobial Study of a Peptide with an Electrolyte in Non-Aqueous Medium","authors":"R. Geetha, R. Padmavathy, T. Malini, N. Radha","doi":"10.55318/bgjp.2023.50.2.159","DOIUrl":"https://doi.org/10.55318/bgjp.2023.50.2.159","url":null,"abstract":". A peptide can be used as a functional building block to create arti-ﬁcial structures when there is sufﬁcient displacement and functional ability in terms of its assigned function. The nature and the relative strength of the inter-molecular interactions between the components of the liquid mixtures/solutions have been investigated by ultrasonic method. In the present study density ( ρ ), ultrasonic velocity ( u ) and viscosity ( η ) of the ternary solutions of peptide–amide with electrolyte have been measured at 298.15, 308.15 and 318.15 K respectively, over the entire composition range using digital density meter, ultrasonic interferometer and Cannon Fenske viscometer respectively. The measured data have been used to compute the thermodynamic parameters such as internal pressure and free volume. The results have been analyzed on the basis of variation in concentrations and temperatures. The results obtained from the ultrasonic methods using the basic parameters have been correlated with FT-IR and Antimicrobial studies and they have been interpreted in terms of peptide–amide interactions. An attempt is made to corroborate the thermodynamic, experimental FT-IR and antimicrobial studies of","PeriodicalId":217381,"journal":{"name":"Bulgarian Journal of Physics","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132772230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, Growth and Characterization of Magnesium Sulfate Doped L-Leucinium Oxalate Semi-Organic Crystal for Laser Applications 激光用硫酸镁掺杂l -草酸铕半有机晶体的合成、生长和表征

Bulgarian Journal of Physics Pub Date : 2023-06-05 DOI: 10.55318/bgjp.2023.50.2.127

{"title":"Synthesis, Growth and Characterization of Magnesium Sulfate Doped L-Leucinium Oxalate Semi-Organic Crystal for Laser Applications","authors":"","doi":"10.55318/bgjp.2023.50.2.127","DOIUrl":"https://doi.org/10.55318/bgjp.2023.50.2.127","url":null,"abstract":". Semi-Organic Magnesium Sulfate-doped L-Leucinium oxalate (MSLO) single crystal was grown using slow evaporation method. Structure of the crystal was determined by single-crystal X-Ray Diffraction (XRD). Lattice parameters of MSLO crystal were determined. Optical transmittance study was carried out to ﬁnd various linear optical parameters like band gap, reﬂectance, refractive index, absorption coefﬁcient, extinction coefﬁcient, optical conductivity. Vickers Microhardness study was carried out to ﬁnd mechanical properties such as hardness, work hardening coefﬁcient, brittleness index and fracture toughness of the grown MSLO crystal. Kurtz-Perry powder technique with Nd: YAG laser was applied to study the second harmonic generation (SHG) competency. By using Z-scan technique, third-order NLO efﬁciency of MSLO crystal was calculated. LDT study was also done for MSLO crystal. It is observed that magnesium sulfate-doped L-leucinium oxalate (MSLO) crystal has the superior properties compared to that of undoped L-leucinium oxalate crystal. EDS studies were conducted for MSLO crystal to check the elements present in the crystal.","PeriodicalId":217381,"journal":{"name":"Bulgarian Journal of Physics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121925532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Certain Investigations on Bulk Viscous String Models of the Universe with BVDP 基于BVDP的宇宙体粘性弦模型的若干研究

Bulgarian Journal of Physics Pub Date : 2023-06-05 DOI: 10.55318/bgjp.2023.50.2.095

R. K. Mishra, Heena Dua

引用次数: 0

Anisotropic Bianchi Type-I String Cosmological Models in Normal Gauge for Lyra’s Manifold with Variable Deceleration Parameter 变减速参数Lyra流形法规下各向异性Bianchi i型弦宇宙学模型

Bulgarian Journal of Physics Pub Date : 2023-06-05 DOI: 10.55318/bgjp.2023.50.2.115

Shilpi Singhal, Dr. Sanjay Ramkrishna Bhoyar, Vandna Srivastava

引用次数: 0